my hatchling pinstripe ate at first and then stopped. She was only 65 grams and went down to 40 grams in a month and a half. I assist fed her once and now shes taking hoppers like its no ones business. Shes hitting 90 grams now. Just make sure they are hydrated and have their hide spots, make them just big enough for them to fit it. hatchlings like to feel nice and snug, gives them a sense of security. Make sure when you feed them let the mouse sit in the room for about 30 minutes get a nice scent going and get their interest in feeding up.